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  1. #11
    PWCToday Newbie knewton's Avatar
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    Sep 2015
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    Ottawa ks
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    52
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    Re: 87 650sx no ststart.

    Sounds good, what's the plan?

  2. #12
    PWCToday Newbie knewton's Avatar
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    Ottawa ks
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    Re: 87 650sx no ststart.

    I'm in, what's the plan?

  3. #13
    PWCToday Newbie knewton's Avatar
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    Sep 2015
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    Ottawa ks
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    Re: 87 650sx no ststart.

    Oops though the first on didn't go through.

  4. #14
    PWCToday Newbie knewton's Avatar
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    Sep 2015
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    Ottawa ks
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    Re: 87 650sx no ststart.

    I rechecked the compression today. Front cylinder 135, rear 140. I also tried some ngk iridium plugs with no luck.

  5. #15
    Frequent Poster Sxsixfitty's Avatar
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    Nov 2014
    Location
    Michigan
    Age
    47
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    199

    Re: 87 650sx no ststart.

    I am leaning toward an electrical issue at this point. You're compression seems to be ok although the difference between cylinders is borderline. If it won't even fire on starting fluid maybe you have weak spark. Probably have to check your electrical system with an ohm meter.

  6. #16
    Frequent Poster
    Join Date
    Jul 2006
    Location
    Kansas
    Posts
    249

    Re: 87 650sx no ststart.

    knewton i am going to pm ya. Maybe we can meet up this weekend? Waiting on my battery to charge so I can recheck mine.

    what carb do you have.
    Last edited by mstbone67a; 03-08-2016 at 09:09 PM. Reason: edit
    1995 Tigershark Daytona--Sold!!
    2001 Seadoo GTI--Sold!!
    1999 Seadoo GTX Limited--sold did 58mph
    1999 Yam GP1200--Sold and missed!! 60mph..
    1985 KAW JS550--Sold!!
    1989 KAW 650sx--

  7. #17
    PWCToday Newbie knewton's Avatar
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    Sep 2015
    Location
    Ottawa ks
    Age
    52
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    Re: 87 650sx no ststart.

    It's a Keihin CDK II 38, choke plate removed for primer. The exhaust pipe is westcoast with stock water box. Block off plates for the purge valve & oil injection.
    Let me check what plans my wife may have for the weekend.

  8. #18
    PWCToday Newbie
    Join Date
    Feb 2005
    Location
    Georgia
    Posts
    18

    Re: 87 650sx no ststart.

    I'm having what seems to be the same problem on my 88 650SX. I have tried everything I can think of but I cannot get this thing to start. I wish some one who has had this same problem and repaired it would come forward.

  9. #19
    Frequent Poster
    Join Date
    Jul 2006
    Location
    Kansas
    Posts
    249

    Re: 87 650sx no ststart.

    Evening guys, I drove down to see Knewton, Figured it would be worth a shot to help a bud out. Strangest thing he has 150psi compression both cylinders with my tester, the spark does seem a bit weaker than mine. Using his primer or some starter fluid, it will not even try to kick. Checked to make sure cables are connected right. We checked to make sure exhaust is pushing air and not plugged on the side of the ski. I checked the TDC with the timing mark and it is right on. We tried to measure the cdi, however pretty much none of the readings match the manual.


    secondary plug-plug----16.8k ,, he has a spare one that measures 28k(original he took off)
    Charger yellow-yellow= 2 ohms
    exciter=320

    I came home and checked mine today..
    CDI secondary= 7.39k
    charger=2.3
    exciter=313
    I could not get any of the other measurements on the cdi to match the table either.


    20160312_184616.jpg
    1995 Tigershark Daytona--Sold!!
    2001 Seadoo GTI--Sold!!
    1999 Seadoo GTX Limited--sold did 58mph
    1999 Yam GP1200--Sold and missed!! 60mph..
    1985 KAW JS550--Sold!!
    1989 KAW 650sx--

  10. #20
    Frequent Poster
    Join Date
    Jul 2006
    Location
    Kansas
    Posts
    249

    Re: 87 650sx no ststart.

    Does anyone know if those reading in the manual are realistic to get? We are using digital voltmeters.

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